It was clear this season that x’s and o’s were not the driving force behind Dallas’ success (or lack thereof). As seen through the last-second plays that always ended in a Luka Doncic stepback, the Mavericks severely needed a basketball mastermind on the sideline. To be fair, the coaching staff did not have much of a roster to experiment with. There were wrinkles that they could have thrown out, but sooner or later the roster holes were going to get exposed. Either way, the coaching staff did not implement everything that they could have (give us more Luka Doncic and Kyrie Irving pick-and-rolls).